Why is Redwing communication so complicated
compared to many other species?
Large numbers of Redwings nest in even a small cattail marsh. Territorial calls
and exposing their epaulets can help males define their territorial boundaries
without too much fighting. But these crowded birds must also cooperate to chase
off crows, and warn of other predators and dangers. They can also feed in large
flocks, because where they do find food, usually insects and seeds from fields
and pastures, their food supplies are abundant. By communicating, when one bird
finds food they can all feast. Most territorial birds nest farther apart, and
most territorial birds don't gather in flocks to feed during the breeding season.

Why has there been so much
research on Red-winged Blackbirds?Scientists find redwings and their nests easily, their
territorial boundaries are easy to map because the birds defend them
so conspicuously with voice and displays, and the birds don't hide
when people are near. So they are easy to study. Also, the ways redwings
use their plumage and voices to communicate are fascinating to scientists.